Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
khanh toan » thanh toan, khanh thanh, khanh thuan
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
cao sach » co sach, ao sach, lao sach
cau sach » hau sach, rau sach, khau sach
tang cua » mang cua, hang cua, tang luan
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: cho ((cao sach) OR (cau sach)) - hanh tang cua ((nhung cong) OR (dung cong)) khanh toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho ((cao sach) OR (cau sach)) - hanh tang cua ((nhung cong) or (dung cong)) khanh toan tap~".
• Adding a wildcard symbol may retrieve word variants: cho ((cao sach) OR (cau sach)) - hanh tang cua ((nhung cong) or (dung cong)) khanh toan tap*.